It's also possible these structures may be classified as other residential. I would be more inclined to attach that classification depending on the building's make-up. You'll have to make the determination based on the information you have.
Other Residential Building. A residential building that is designed for use as a residential space for 5 or more families or a mixed-use building in which the total floor area devoted to non-residential uses is less than 25% of the total floor area within the building.
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The opinions expressed are mine and they are not to be taken as legal advice.